Selective removal of 2,4-dichlorophenol from contaminated water using non-covalent imprinted microspheres

被引:76
作者
Li, Ying [1 ]
Li, Xin [1 ]
Li, Yuqi [1 ]
Qi, Jingyao [2 ]
Bian, Jiang [1 ]
Yuan, Yixing [2 ]
机构
[1] Harbin Inst Technol, Dept Chem, Harbin 150090, Peoples R China
[2] Harbin Inst Technol, Sch Municipal & Environm Engn, Harbin 150090, Peoples R China
基金
国家高技术研究发展计划(863计划); 中国国家自然科学基金;
关键词
2,4-Dichlorophenol; Molecularly imprinted polymer; Removal; Water; AQUEOUS-SOLUTIONS; POLYMERS; SEPARATION; METABOLITES; POLLUTANTS; SORPTION; PHENOL;
D O I
10.1016/j.envpol.2009.01.014
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
A molecularly imprinted polymer (MIP) for selective removal of 2,4-dichlorophenol (2,4-DCP) in water was prepared as microspheres by the reverse microemulsion polymerization method based on the non-covalent interactions between 2,4-DCP, oleic acid, and divinylbenzene in acetonitrile. Microspheres have been characterized by Fourier transform infrared spectrometer (FTIR) and energy dispersive X-ray spectrometer (EDS) studies with evidence of 2,4-DCP linkage in polymer particles and scanning electron microscopy (SEM) to study their morphological properties. The proper adsorption and selective recognition ability of the MIP were studied by an equilibrium-adsorption method. The MIP showed outstanding affinity towards 2,4-DCP in aqueous solution and the optimum pH value for binding has been found around the neutral range. The molecular recognition of 2,4-DCP was analyzed in detail by using molecular modeling software. In addition, by investigating the variation in the adsorption ability of the MIP, it clearly showed excellent reproducibility. (C) 2009 Elsevier Ltd. All rights reserved.
引用
收藏
页码:1879 / 1885
页数:7
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